Finally passed my RBC exam after three attempts — here's what worked

by lisa.prep 29 views3 replies
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lisa.prepOP
May 27, 2026

So I just got my results back and I finally passed the RBC exam on my third try. Honestly I'm still in shock because I was seriously starting to question whether this certification was even in the cards for me. First two attempts I was scoring in the low 60s and the passing threshold just felt impossible to crack.

What finally made the difference was ditching the textbook-only approach and actually doing timed practice questions every single day for six weeks. I found a solid RBC practice test bank online and worked through it category by category — renal physiology, bicarbonate interpretation, ventilator management, that whole chunk. The RBC study guide I'd been using before was fine for theory but didn't prepare me for how the actual questions are worded.

Anyone else out there on their second or third attempt? Happy to share my full study breakdown. Also picked up some really specific exam tips for the blood gas interpretation section that I wish I'd known from the start — those questions trip up so many people.

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Sarah M.
May 28, 2026
Congrats!! I passed mine last spring on my second attempt and I totally relate to that low-60s plateau. What finally clicked for me was understanding the Stewart approach to acid-base rather than just memorizing the Copenhagen method. Once I actually understood the WHY behind the compensation formulas, the questions got way less tricky. How many hours a week were you putting into practice questions toward the end?
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James R.
May 28, 2026
This post is so timely — I'm scheduled for my first attempt in about seven weeks and I'm genuinely nervous. I've been working as an RT for four years but the RBC material covers some stuff we rarely touch day-to-day, especially the extracorporeal stuff. Did you find the actual exam harder than the practice tests, or about the same difficulty level? That's my biggest fear going in.
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Carlos B.
May 28, 2026
Third attempt pass is honestly more impressive than first-try people give credit for. You had to learn HOW you learn under pressure, not just the content. Good luck to everyone else grinding right now — it's a hard cert but absolutely worth it once you have those letters behind your name.

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